728x Online

Use a clear, concise message. The audience has only a few seconds to understand the offer.

Use high-quality images that directly relate to the offer. Use a clear, concise message

If using GIF, keep animation simple to avoid distracting the user from the message. Provide a list of best ad networks for this format? Discuss ad copy strategies to improve CTR? Google Display Ad Size Guide & Free Templates - Figma If using GIF, keep animation simple to avoid

Test different colors, CTAs, and images to see which version produces the best CTR. Google Display Ad Size Guide & Free Templates

Include a button or text that clearly tells users what to do (e.g., "Click Here," "Learn More," "Sign Up").

While 728x90 is desktop-focused, ensure your overall campaign includes mobile-responsive alternatives (like 320x50 or 300x250) for a full, effective campaign.

Based on the search results, "728x" most commonly refers to , also known as "leaderboards," which are highly effective, traditional display ad formats utilized in digital advertising.